Molder&#39;s flask.



PATENTED MAR. s, 1903.

0. PHELPS, MOLDERS PLASK.

APPLICATION 111 111) NOV. 17, 1902.

N0 MODEL.

ails PETERS c0. P HUTO-UTNO.; wAsN UNITED STATES PATENT OFFICE.

CHARLES PHELPS, OF OSKALOOSA, IOWA.

MOLDERS FLASK.

SPECIFICATION forming part of Letters Patent No. 721,831, dated March 3,1903.

Application filed November 1'7, 1902. flerial No. 131,793. (No model.)

To all whom it may concern:

Be it known that I, CHARLES PHELPS, acitizen of the United States,residing at Oskaloosa, in the county of Mahaska and State of Iowa, haveinvented certain new and useful Improvements in Molders Flasks, of whichthe following is a specification.

The objects of myinvention are to provide a molders flask of simple,durable, and inexpensive construction, in which both the cope and thedrag members are composed of sheetmetal sides, having formed thereinoutwardlyprojecting longitudinal ribs, widest at their outer ends andtapering inwardly toward their inner ends, and cast-metal end piecesadjustable longitudinally of the side pieces and detachable, so that afoundry may be equipped with a comparatively small number of side andend pieces of different lengths and from these pieces flasks may'beformed of substantially any size required, and in addition to this theend pieces of a flask may be adjusted in the sides to substantially fitthe patterns to be cast, and hence a minimum amount of sand may be usedand the time and labor required for packing and handling sand may beminimized.

My object is, further, to provide side pieces for flasks of this classin which the grooves formed by the on twardly-projectin g ribs serve toretain sand inthe flask members and the ribs themselves serve as handlesby which the flask members may be readily grasped and moved about.

A further object is to provide a cope member so arranged thatsand-supporting partitions may be detachably connected therewith andadjusted therein in such manner as to support the sand, and thus becapable of assuming such positions as to avoid the patterns in the sand,and, further, to provide sheet-metal side pieces for flask-sections soshaped as to resist the strains and pressure to which they areordinarily subjected in molding.

My invention consists in certain details in the construction,arrangement, and combination of the various parts of the device wherebythe objects contemplated are attained, as hereinafter more fully setforth, pointed out in my claims, and illustrated in the accompanyingdrawings, in which Figure 1 shows in perspective my complete flask readyfor use. Fig. 2 shows in perspective one of the end pieces, and Fig. 3shows in perspective one of the sheet-metal side pieces.

Referring to the accompanying drawings, I shall first describe the sidepieces. Each side piece is made of sheet metal, with its edges 10 turnedoutwardly and then toward the longitudiual center to add strength to theedges. At or near the central portion of the side piece alongitudinaloutwardly-projecting rib 11 is formed, the top and bottom edges of therib converging toward the inner surface of the side piece, thus formingon the inner face of the side piece a longitudinal groove widest at itsouter end and materially strengthening the side piece against suchpressure as would tend to bulge it outwardly at its central portion.Formed in each side piece is a series of openings 12 for purposeshereinafter made clear.

The end pieces are preferably made of cast metal and the body portionsthereof are indicated by the numeral 13. Each end piece is provided withan outwardly-projecting lug 14:, having a vertical opening 15 therein.At each end of the end piece is a narrow neck 16, widening graduallytoward its outer end, and on the outer end thereof is a flat headpiece17, arranged at right'angles to the end piece and of a size capable ofentering the widest portion of the groove in the side piece. Each ofthese heads 17 is provided with an opening 18 for purposes hereinaftermade clear.

The numeral 19 is used to indicate sandsupporting bars, their underportions being arched at 20 and their ends provided with projections 21,designed to enter the grooves in the side pieces and to be capable ofslid- In practical use the parts are assembled as follows: The operatorfirst selects four side pieces of the same length and as nearly aspossible of the length required for the particular patterns to be cast.Then four end pieces are selected of about the width required for thepattern to be cast. Then a number of sand-supporting bars are placedwith their ends 21 in the grooves of the side pieces of the cope member.Then the ends are placed in the grooves of the side pieces and moved toposition where they will make a flask of the size desired. Then pins 22are passed through the nearest ones of the rows of the openings 12 andthrough the openings 18 of the end pieces. The heads 17 on the endpieces will always hold the side pieces exactly at right angles to theend pieces, so that the flask will always be in the form of a perfectparallelogram. The sand-supporting bars may easily be movedlongitudinally, so that they will not in any way interfere with thepatterns, and the arched portions thereof serve to receive shallowpatterns, so that the sandsupporting bars may be placed directly abovethe shallow portions of the patterns without touching them. If the flaskmembers have been prepared for casting, they may be securely connectedby the pins 23,

and the cope member may readily be handled by the operator grasping theoutwardlyprojecting ribs 11. When not in use, the parts may be quicklyand easily separated and the parts being approximately flat will occupya very small space when properly stacked, thus avoiding the necessity ofmaintaining large flask sheds or yards in connection with a foundry.

Having thus described my invention, what I claim, and desire to secureby Letters Patent of the United States therefor, is

1. An improved molders flask, comprising side pieces having on theirinner faces longitudinal grooves narrowest at their inner surfaces andend pieces having at their ends narrow necks to enter the narrowportions of the grooves, and enlarged heads to fit into the largerportions of the grooves, for the purposes stated.

2. An improved molders flask, comprising side pieces having longitudinalgrooves on their inner faces and longitudinal ribs on their outer faces,and end pieces entering said grooves.

3. An improved molders flask, comprising side pieces made of sheetmetal, the longitudinal central portions thereof shaped to form alongitudinal rib on the outer surface and a longitudinal groove on theinner surface, said rib and groove being widest at their outer ends andtapering toward their inner ends and end pieces having narrow necks neartheir ends and enlarged heads beyond the narrow necks, said heads andnecks entering said grooves and necks.

4. An improved molders flask, comprising side pieces made of sheetmetal, the longitudinal central portions thereof shaped to form alongitudinal rib on the outer surface and a longitudinal groove on theinner surface, said rib and groove being widest at their outer ends andtapering toward their inner ends, and end pieces having narrow necksnear their ends and enlarged heads beyond the narrow necks, said headsand necks entering said grooves and necks, and a series ofsand-supporting bars with their ends inserted in the grooves of one ofthe flask members and detachably and adjustably connected therewith.

5. An improved molders flask, comprising cope and drag sections eachcomposed of two side pieces having longitudinal dovetailed grooves ontheir inner faces and two end pieces having dovetailed ends to entersaid grooves, and means for detachably securing said end pieces inposition in the side pieces.

6. An improved molders flask, comprising cope and drag sections eachcomposed of two side pieces having longitudinal dovetailed grooves ontheir inner faces and two end pieces having dovetailed ends to entersaid grooves, and means for detachably and adjustably securing said endpieces in position in the side pieces.

7. In an improved molders flask, a cope member composed of two sidepieces having longitudinal dovetailed grooves on their inner faces, twoend pieces having dovetailed ends to enter said grooves and a number ofsand-supporting partitions having dovetailed ends to enter the grooves,for the purposes stated.

8. An improved molders flask, comprising cope and drag members, eachcomposed of two sheet-metal side pieces shaped to provide a longitudinaldovetailed groove on the inner face of each and an outwardly-projectingrib on the outer face of each, said rib being provided with pin-openingsand two end pieces having dovetailed heads to enter the grooves, eachhead being provided with a pin-opening, pins to pass through theopenings in the side pieces and through the openings in the head todetachably and adjustably connect the heads with the side pieces,perforated lugs on the end pieces to receive connecting-pins, andsand'supporting bars having dovetailed ends to enter the grooves in thecope member, arranged and combined substantially in the manner set forthand for the purposes stated.

CHARLES PHELPS.

\Vitnesses:

JOHN M. IIERRON, ANNA PHELPS.

